Power take-off



R. HAMILTON POWER TAKE-OFF March 15, 1932.

Filed May 7, 1927 INVENTOR.

J w m UNIT n LSETA'I' ES PATsNro F cs f RUSH HAMILTON, or OAKLAND, CALIFORNIA, nssIGNoR .ro THE STANDARD GAS.

ENGINE COMPANY, or oA LA' 'n, cALIroRNIA rowan TAKE-OFF iApplication 'fileii May 7, 1927; ScrialNr18 9fl 13 This invention relates to supplemental gearing which may be applied to a tractor or' other-motor vehicle of the shaft-driventype, and aims to provide a power take-off for driv- 'ing auxiliary machinery or apparatus, and

also to provide an add tional speed for the vehicle.

' One object ofthe invention is to provide a device which may be attached to or incorporated with a motor vehicle of known type, I

to enable such vehicle to be used as a stationary power plant with-out impairing its usefulness for its usual functions.

Another object is to provide a fourth or high-high speed to enable the vehicle to be 7 more rapidly moved over roads.

- vided with the usual driving shaft 1 which is alined with, and detachably connected to, a

driven shaft 2 by meansof a gear 3 and a pin= ion 4, the latter being splined to shaft 2 and attached by means of a collar 5 to a shiftable gear 6. Another gear 7 is fixed to the rear end of shaft 2; r

A propeller shaft 8 is mounted below shaft 2 and has gears 10, 11, 12 and'13 mounted thereon in the usual relation to provide for the transmission of power at different speeds to a pinion 14'and ring gears 15 and 19 to drive the tractor. 7 V

The power take-off and auxiliary speed mechanism comprises a countershaft H 16 mounted above or adjacent the drive shaft 2. Upon the countershaft are mounted two gears 17 and 18, fixed together by a collar 20 and splined to the countershaft so as to be shiftable by means of a handle 21 and shift rod 22. Gears 1'? and 18 mesh with gears 4 and- 3 respectively to form the supplemental" speed, the gear ratio of which will depend- ,upon the ratio of gear 17 to gear 18.

At the rear end of countershaft 16 is and outiof engagement. Gear 24 is fixed'to a power shaft. 27 'suitably journaled in the V tractorframe and having its rear en'd '28 splined to receive a gear or pulley for -driv-' ing other machinery.

In the operation of theeXtra speed, the

flow of power is from drive shaft 1, through 1 gear 3, gear 18, gear 17, pinion 4, gear'G, gear 12, and gear 13 to pinion 14. In the-embodiment illustrated,"the auxiliary speed will be highercthan thehigh speed of lthe'tractor,

thus forming a high-high speed.

In. the operation of the power take-oifpthe I flow of power is from drive shaft 1, through gear 3, gear 18, countershaft16,-gear 23, and

gear 24 to the power shaft 27 It will be evi-; f dent that by throwing gear 23 out of mesh with gear 24, the auxiliaryspeed may be used without driving. the power shaft 27, and that power shaft 27 may be thrown in or out of operation without interfering with the auxiliary speed gearing.

' .A further use of the power take-offappa 1 f ratus is that it is possible to crank the motor of the tractor by rotating shaft 28, thereby turningvthe motor over more rapidly than, could be done by means, of the usual hand crank. r

Iclaimi mission'; sai'd mechanism'comprising a bearing bracket disposed outside ofythe usual transmission; a power take-off shaft rotatably supported therein; andinternal gear on the end of the power take-off shaft, disposed" between the bracket and the usualtransmis-' sion; a driving pinion slidable on the end of said counter shaft and being rotatable therewith; andmeans for shifting said pinion into and .out'of engagement with said internal gear.v v v In testimony whereof I aflix my signature.

RUSH. HAMILTON.

splined a pinion 23 which engages the internal gear 24. A handle 25 and shift rod 26. 

